Demospongiae

plural noun

De·​mo·​spon·​gi·​ae

-jēˌē

: a large class of Porifera comprising the majority of living sponges and being characterized by complex structure with a skeleton of tetraxial or simple siliceous spicules or of fibers of spongin or of both

Word History

Etymology

New Latin, alteration of Desmospongiae

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